Anonymity is one of the important aspects of Teitho, and has a role in Tolkien's stories as well. And so it shall be our May theme. Thanks to Idhren for the suggestion!

Aragorn had to spend much of his life in a disguise, without revealing his name - not even knowing his true name until adulthood. It must have been hard, to keep his name and linage secret for all the time, end entrusting it to only a selected few. But then he became a king, and suddenly anonymity may have became a desired relief from the court and a nostalgic reminder of the old times.

While the theme seems to be made for Aragorn, Legolas could have a need of anonymity as well. Maybe the prince of Greenwood (or later Ithilien) wanted to try the life of a simple guard or servant just for a while, or got into a situation where revealing his name would put him in danger.

But it's not a requirement for Aragorn or Legolas to be anonymous in your story. It can be someone entirely else. An anonymous admirer, for example...